Glassworking mechanism



N. W. HARIMAN.

GLASSWORKING MECHANISNI.

APPLICATION FILED IIIII. 2r. IsIs.

Patented Feb. 28, 1922.

l0 SHEETS-SHEET l.

WITNESSES N. W. HARTMAN.

GLASSWORKING MECHANISM.

APPLlcAloN HLED 1AN.27.1913.

Patented Feb. 28, 1922.

I0 SHEETS-SHEET 2.

INVNTOR MM N. W. HARTMAN.

GLASSWORKING MECHANISM.

APPLlcATmN FILED 1AN.27.1913.

1 ,408,000, Patented Feb. 28, 1922.

10 SHEETS-SHEET 3.

N. W. HARTMAN."

GLASSWRKING MECHANISM.

APPLICATION FILED JAN. 21. 1913.

1m M s, R 2m OM ha T N 10W. E m v WITNESSES gw'ulck ..aw @w We N., w. HAmMAN. GLASSVIORKING MECHANISNI. APPLICATION FILED IAN. 27, I9l3.

Patented Feb. 28, 1922.

IO SHEETS-SHEET 5.

INVENTOR WITNESSES /wwfk N. W. HARTMAN.

GLASSWORKlNG MECHANISMx APPLICATION man 1m27.191s.

1 ,408,000, Patente Feb. 28, 1922.

l VENT R WITNESSES @5MM @MWL- N. W. HARTMAN.

GLASSWORKING IVIECHANISM.

APPLICATION FILED IAN. 27.1913.

1 ,408,000, Patented Feb. 28, 1922.

I0 SHEETS-SHEET 7.

INVENTUR N. WI HARIMAN.

GLASSWDRKING MECHANISM.

APPLICATION FILED .IAN- 27| 1913.

Patented FGI). 28, 1922.

1o SHEETS-SHEET a.

les

Fly. 1 6.

N. W. HARTMAN.

GLASSWORKING MECHANISM.

APPLICATION man 1AN.21,1913.

Patented Feb. 28,- 1922.

I0 SHEETS-SHEET 9.

ml In INVENTOR N. W. HARTMAN.

GLASSWDRKING MECHANISM.

APPLICATION min JAN. 2r, 1913.

Patented Feb. 28, 1922.

l0 SHEETS-SHEET l0.

WIT N E S S E S 7am/We @jd UNITED STATES PATENT orifice. f

NOBLE W. HARTMAN, OF TOLEDO, OHIO, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

GLASSWOR-KING MECHANISM.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application led January 27, 1913. Serial No. 744,549.

T 0 all whom t may concern:

Be it known that I, NOBLE W. HARTMAN, a citizen of the United States, residing at Toledo, Ohio, have invented certain new and useful Improvements in Glassworking Mechanism, of which the following is a specification.

My invention relates to the working of glass, including the manufacture of articles of glass by blowing methods, and it comprises both certain novel methods of glass Working and also novel mechanism and apparatus for this purpose. I have hereinafter described a glass working machine which is adapted for automa-tic operation etliciently and economically with particular reference to its employment in the production of incandescent lamp bulbs; but while the invention extends to the particular mechanism described and its specific features and details, which are of importance because of their specific advantages, yet the invention is not confined to this machine and its details, but can be ot-herwise carried out and applied, and can be employed, also, in the product-ion ofarticles other than bulbs for incandescent lamps. Amongst various practical advantages obtainable in connection with my invention which will hereinafter become apparent are uniformity of product and rapidity and cheapness of production,-besides other well-known advantages of manufacture by entirely automatic machinery over manufacture involving the employment of skilled labor and the idiosyncrasies of the individual workman.

As to certain features of the machine described, this application is a continuation of my prior application Serial No. 507,056 filed July 12, 1909 under the title Glass blowing machine. The machine described also embodies certain features of that disclosed in Patent No. 813,289 granted to me February 20, 1906 under the same title.

The machine herein shown and described is adapted to take or receive molten glass and to produce complete lamp bulbs therefrom. 1n this machine, t-he actual formation of a bulb is effected by blowing in a mold, and the machine comprises a so-called blowiron on which a charge of glass may be carried and manipulated and which is adapted to co-operate with the mold and also with various other agencies and mechanisms,

provision being made for relative movement of the blow-iron and these various agencies to bring them into co-operative relation in the most advantageous manner. After the blow-iron has received the charge of glass,- to outline briefly the general action of the macl1ine,the charge may when necessary be prepared and brought to such shape that the glass will be properly distributed in the blown article by inertia force due to suitable movement of the blow-iron or by the direct action of suitable shaping means upon the glass in a manner corresponding to the operation of hand blowing known as inarvering, or both. The glass on the blow-iron having been brought into the mold and the latter closed, the blowing occurs, air under pressure passing through the blow-iron and expanding the glass against the walls of the mold. The blowing having been concluded and the mold opened, the blown bulb is withdrawn and is detached by a detaching device, which may preferably act after the withdrawal of the bulb from the mold. Removal of any glass adhering to the blowiron having been effected by a cleaning device, the blow-iron is ready for another charge of glass and the machine as a whole for another cycle of operations. The blowiron is preferably rotated during the blowing7 in order that the surface of the blown article may be perfectly smooth; and as such rotation does not necessarily interfere with the other operations, but may even be made to facilitate some or all of them, it need not be interrupted.

In the drawings, Figure 1 is a side elevation of a glass blowing machine constructed in accordance with my invention, certain minor parts being broken away or altogether removed, and the intermediate portions of other parts being broken away or removed in order that the uppermost parts of the machine may be brought within the limits of the drawing.

Figure 2 is a front elevation of the main portion of the machine, certain parts and mechanisms being removed or omitted, and the intermediate portions of certain parts being broken away as in Figure 1.

Figure 3 is a plan view of the machine as a whole, certain parts being broken away or omitted.

Figure 4 is a side elevation showing substantially the portion of the machine which lies behind the line 1 -4; in Figure 3 with the moving parts in positions different from those which they occupy in Figures 1 and 3, certain parts being in section at a vertical surface corresponding to this line, and certain parts being shown in positions which do not correspond to those of the rest.

Figure 5 is a detail front elevation of the upper portion of the machine, certain parts being shown as in section at a vertical surface corresponding substantially to the line 5-5 in Figure 2.

Figure 6 is a detail plan view of the upper portion of the machine.

Figure 7 is a detail side elevation of the upper portion of the machine, certain parts being in section at a vertical surface corresponding substantially to the line 7-7 in Fi ure 6.

Figures 8, 9, 10, 11, and 12 are diagrams illust-rating the operat-ion of the machine.

Figure 13 is a side elevation of the parts comprised in the lower portion of the machine which lie behind the vertical surface corresponding substantially to the line 13- 13 in Figure 3, certain parts being shown as in section at said surface.

Figure 14: is a plan view of the mold and various parts associated with it or specially concerned in the blowing of the bulb, certain parts being in section at a horizontal surface corresponding to the line 14T-14 1n Figure 1.

Figure 15 is a side elevation of a part of the machine which as a whole lies behind (to the left of) the line 15-16 in Figure 14; and Figure 16 is a similar view of parts which as a whole lie in front (to the right of) said line, portions of the iirst mentioned part being in section at a vertical surface corresponding to said line.

Fig. 17 is a front elevation (at. right angles to the view adorded by Fig. 1) of a mechanism of my machine which is intended to clean ofi' any glass adhering to the blowiron after the detachment of the blown bulb, certain parts being broken away or in section as indicated by the line 17-17 in Fig. 1 and the mechanism for detaching the bulb also appearing with certain parts in section or broken away.

Fig. 18 is a plan view of a bulb detaching mechanism which embodies certa-in features additional to those of that shown in Figs. 1, 3, and 17, a portion of the cleaning off mechanism being diagrammatically indicated; and Fig. 19 is a side elevation of the parts shown in Fig. 18 from the right of that figure.

Fig. 2() is a front elevation (from the left of Fig. l) of a mechanism of my machine which may be employed for shaping the glass preparatory to the blowing operation; and Fig. 21 is a view looking downward upon the parts of this mechanism which lie beneath the plane of section indicated by the line 21-21 in Fig. 20.

Fig. 22 is a side elevation of a device for preparatory shaping of the glass different from that shown in Figs. 1, 3, 20, etc., the ligure giving the same view of the device as Fig. 1 gives of that therein shown; and Fig. 23 is a. front elevation of the device (from the right of Fig. 22).

Fig. 24 is a detail view showing certain parts in section at an inclined surface corresponding to the line 24-211 in Fig. 22.

Fig. 25 is a plan view showing the device in the same position as Fig. 22, two gears comprised in it being in mid-section.

Fig. 26 is a view similar to Fig. 22, but from the opposite side of the device.

Fig. 27 is a plan view showing the device in the same position as Fig. 26 of the machine, certain parts above a horizontal plane of section corresponding to the line 27-27 in Fig. 26 being omitted, and two gears be ing shown in mid-section.

Fig. 28 is an elevational detail view illustrating the construction of a clutch mechanism forming part of the device, certain parts being shown in sect-ion at a vertical surface corresponding to the line 28-28 in Fig. 27.

Fig, 29 is a plan view on an enlarged scale also illustrating the construction and actuation of the clutch mechanism aforesaid, certain parts being shown in section at a horizontal surface corresponding to the lineI 29-29 in Fig. 2S, various other parts being broken away. y

Fig. 30 is an elevation showing the parts which appear in Fig. 29 and several others from the front of Fig. 22, various parts being broken away and removed and others being in section at a vertical surface corresponding to the line 30-30 in Fig. 29.

Figs. 31, 32, and 33 are views of one of the parts of the clutch mechanism aforesaid.

Fig. 34 is a view from the left of Fig. 30 showing various parts as in section at a vertical surface corresponding to the line 34- 34 in Fig. 30.

Figs. 35 and 36 are views of a part of the clutch mechanism mentioned above which is intimately associated with the part illustrated in Figs. 31, 32, and 33, Fig. 35 being a mid-section view.

Fig. 37 is a somewhat diagrammatic plan view illustrating the behavior of certain parts shown in Fig. 29 with reference to the blow-iron.

Referrino first to Fig, 1, it will be seen that the blow-iron 1 is supported from a column-like part or structure 2, that the blow-iron is in operative position with respect to the mold 3 for the blowing of a bulb, and that both it and the structure 2 are in a more or less nearly vertically upright position. Provision for gathering a charge or batch of molten glass from a suitable source of supply, such as an ordinary glass furnace 4 in front of the machine, for manipulating this charge, and for bringing about the operation of the various mechanisms and agencies of the machine upon the charge is in part made by mounting the blow-iron 1 so as to be capable of swinging with reference to the structure 2 in a more or less nearly vertical plane about a transverse axis 5 perpendicular to the plane of the paper and of movement in its own longitudinal direction with reference to the axis 5 about which it thus swings, and also by making the structure 2 itself capable of swinging about an axis per endicular to the plane of the paper whici may for the present be conveniently referred to as coincident with a shaft 6,-all these movements taking place without interference with one another or with the rotation of the blowiron about its own longitudinal axis. From Figs. 4 and 10 it will be seen that the gathering of a charge of glass occurs when the column 2 and the blow-iron 1 are swung forward so that the lower end of t-he blowiron is projected into the molten glass in the' furnace 4. The removal of the blown bulb out of the mold 3 the detachment of the same from the blow-iron, and the cleaning off of any glass left adhering to the blow-iron take place during this forward movement of the latter from the position shown in Fig. 1 to that shown in Figs. 4 and 10, the last two operations being eected by devices or mechanisms 7 and 8 arranged in its path, (see Figs. 8 and 9), and the blow-iron 1 soon after passing idly through the marvering device 9 with which the machine may, as shown, be provided. Any necessary preparatory shaping of the charge of glasscomprising, if desired, marvering by the device 9 (see Fig. 11)-takes place on the return movement of the blow-iron from the furnace 4 to the mold 3.

Referring, now, to Figs. 1, 2, 3, and 4, it will be seen that the main portion of the machine is mounted on a frame structure 10 which comprises various brackets or standards for supporting the parts of the machine or affording them bearing and is itself supported on wheels so as to be easily moved about (only the forward pair of these wheels appearing). Near the rear of the frame 10 is mounted a transverse shaft 12 from which some of the moving parts are more or less directly actuated and from which power is also transmitted or distributed to other parts of the machine,-this shaft being driven from any suitable source of power such as a motor 13 mounted at the rear of the frame and acting through a train of reduction gearing comprising a pinion 14, a large gear 15 o-n the rear end of a short shaft 16 and a worm 17 on its forward end, and a worm-wheel 18 on the transverse shaft 12. As shown, the transverse shaft 6 in front of the transverse shaft 12 just mentioned (this shaft 6 having already been referred to in locating the axis for the swinging of the movable column structure 2 which carries the axis 5 about which the blow-iron 1 directly swings) receives motion through a train of gearing comprising a bevelled gear 19 on the rear shaft 12 meshing with a bevelled gear 2O on the rear end of an inclined shaft 21 which has on its forward end a bevelled gear 22 meshing with a bevelled gear 23 on shaft 6, and from this shaft 6 various parts are actuated or receive power.

The mounting of the blow-iron 1 and the construction and arrangement of the parts associated with it is shown in Figs. 1, 2, 3, 5, 6, and 7. As will be seen from these figures, and vparticularly from Figs. 2, 5, and G, there is at the upper end of the structure 2 a part or structure 24 comprising two vertically bored portions or sleeves 25 and 26 through which the blow-iron 1 slides and in which it rotates, and also comprising` more or less nearly horizontal hollow shaft portions or trunnions 27 and 28 which have bearings in brackets 29 and 30 on the structure 2. The portions 25 and 27, 26, and 28 are, it will be seen, connected together by an irregular U shaped web. On the outer end of the trunnion portion 28 is secured a crank or arm 31. The arm 31 is rocked to swing the parts 24 and the blow-iron 1 about the axis or fulcrum 5 formed by the trunnions 27 and 28 through a link or rod 32 which is actuated as hereinafter described. A spring 33 may, as shown (Figs. 2, 4, 6, and 7), be connected from a stud 34 on the arm 31 to an eyelet near the upper end of the column 2 in order to supplement the weight of the rod 32 and the parts (hereinafter described) connected to its lower end in swinging the blow-iron 1 forward with reference to the column 2 whenever the rod 32 is not positively held stationary to prevent it or actuated to produce a contrary movement. (In order that the showing of other parts may be clearer, this spring 33 is omitted from Fig. 5).

On the blow-iron 1 between theupper and lower sleeves 25 and 26 in which it revolves is a bevelled gear 35 operatively connected with the blow-iron 1 in any suitable manner so that the blow-iron may slide freely lengthwise through the gear but is compelled to rotate with it. This gear meshes with a bevelled gear 36 which is practically one part with another bevelled gear 37 mounted with it between the upper bearing sleeve 25 and the trunnion 28, these gears 36 and 37 revolving freely on or with a short shaft 38 (see Fig. 5) part of which is in the hollow shaft 28 and the inner end of which extends into a short bore or circular depression in the side of the part 25. The gear 37 meshes with still another bevelled gear 39 mounted on the upper end of a more or less nearly upright shaft 40 having its bearings in brackets 41 and 42 secured at one side of the structure 2. This shaft 40 is driven in a manner hereinafter described, and from it the blow-iron 1 is rotated through the train of gearing just described while at the same time its vertical movement is not interfered with. i

On the upper end of the blow-iron 1 (see Figs. 1, 2, and 7) is secured (as by a setscrew 43) a collar 44 whose position may be altered as desired. Beneath this collar is a part 45 having a bore in which the blowiron revolves freely. This part 45 is suitably connected to a lever 46 fulcrumed at 47 on the upper end of the structure 2. As shown, the connection is through links 48 whose upper ends are pivoted to the part 45 and whose lower ends are pivoted to the ends of the arms or forks 49 of the lever 46. One of the arms 49 is connected to the other arm 49 and to the rear arm 50 of the lever by a U-shaped web 51, and the bearings for the pivot pins or bolts 47 which form the fulcrum of the lever are in brackets 52 on the upper end portion of the structure 2. This construction will always permit the links 48 and the upper end of the blow-iron 1 to swing back close to the upper end of the structure 2 as shown in Fig. 4 when the blow-iron enters the furnace 4. ,By means of a rod or link 53 pivoted to its lower end and actuated as hereinafter described the lever 46 can be rocked to alter the longitudinal position of the blow-iron 1 with reference to the part or structure 24 in which it revolves without interference with any of its other movements.

The column 2 is hollow, as will be seen from Figs. 6, 7 and others, and forms a conduit for the supply of air to the blowirou 1 and. as shown, there is near its upper end an automatic relief-valve 54 (of any approved type) which may loe set to aid in regulating the air-pressure according to the requirements of the work on the machine at any particular time. From the portion of the column 2 above the valve 54 the air passes across through the transverse horizontal portion of the irregularly bent extension or head at its upper end and then again up and forward through the hollow .horizontal bracket portion 29 to the air valve 56 (Fig. 7). This valve 56 is of cyl.-

vindrical form and slides in a sleeve or liner its upper end and a cap 60 secured at the upper side ofthe part 29. As shown, there are ports 61, 62 opposite one another in the sides of the sleeve 57, and the valve 56 has an annular groove 63 which is adapted, when the valve is raised suiiiciently, to overlap both these ports 61, 62 so that air may pass on through beyond the valve. The air which passes the valve 56 goes on to the forward end of the part 29 where the hollow shaft or trunnion 27 has its bearing and enters the trunnion 27 (the end of which is closed by a screw plug,) through holes 64 in its exposed side. From the trunnion 27 the air passes into` a cavity 65 in the part 25, through which the blow-iron 1 extends, and thence it passes through one or another of a plurality of holes 66 into the bore of the blow-iron, these various holes being intended to allow for vertical adjustment of the blow-iron for the blowing of bulbs of different sizes and the like. As shown, the upper end of the blow-iron is solid or is plugged up in any suitable manner. A stem 67 depending from the valve 56 is engaged with the upper end of an adjusting screw 68 in one end of a lever 69, a spring actuated stop 7 0 carried by the lever 69 engaging a toothed wheel 71 on the screw 68 and serving to insure the maintenance of the proper adjustment. The object of the screw 65, it may be remarked, is to vary the extent and duration of opening of the valve 56 for a given movement of the lever 66. The lever 69 is fulcrumed on a pivot 72 in two depending lugs of a bracket 7 3 secured to the lower side of the part and is actuated as hereinafter described through a link or rod 74 pivoted to it.

In the machine shown, the swinging movement of the part or structure 2 as a whole. the swinging movement of the blowiron 1 with reference to it, and the longitudinal movement of the blow-iron are produced from the rear transverse' shaft 12, while the rotation of the blow-iron, the actu ation of the air valve 56. the operation of the mold 3, and various other operations are produced from the forward transverse shaft 6. The swinging` movement of the column structure 2 as a whole is produced by a large cam 75 (see Figs. 1, 2, 3, and 4) whose periphery acts on a. wheel or roller 76 pivoted on a rearwardly extending arm 77 of the structure 2. The swinging movement of the blow-iron 1 with reference to the structure 2 is produced by a smaller cam 7S which acts peripherally through a roller 79 on one end of an arm or lever 80 whose other end is fulcrumed at 81 on lthe column part 2, the lower end of the rod or link 32 already mentioned being pivoted to this lever at 82, and the spring' connected between the arm 31 and the structure 2 (Fig. 2) tending to keep the roller 79 always in contact with the cam 78. The longitudinal movement of the blow-iron 1 is produced by a thirrd small cam 84; whose periphery acts through a roller 85 on one arm of a lever 86 fulcrumed at 87 on a bracket 88 which projects upward and forward from the left-hand end bearing of the shaft 12 (F ig., 2) and extends over the worm wheel 18., the other arm of this lever 86 being pivoted at 89 to the lower end of the rod or link 53 above mentioned.

To render the action of the cams 75, 78, and 84 clearer, I have in the diagrams forming Figs. 8 to 12 shown a number of the positions which these cams and the parts on which they act occupy during a complete cycle of operation of the machine, showing the periphery of the cam 75 in full lines, that of the cam 78 in dots and dashes, and that of the cam 84 in dotted lines,-indicating the other parts by full line center lines, the centers or pivots and bearings which are fixed on the framework 10 or on the structure 2 by small circles with cross marks, and the other centers by plain circles. Referring to these figures and to Figs. 1, fl, and 13, and first to Figs. 1, 8, and 13, it will be seen that a slight revolution of the rear transverse shaft 12 as indicated by the arrow will cause the roller 76 on t-he rear end of the arm 77 of the column structure 2 to pass from the largest circular portion 90 of the large cam 75 where it is shown in Figs. 1 and 13 to the slightly smaller portion 91 immediately following, where it is shown in Fig. 8, thus letting the structure 2 as a whole swing forward slightly, and will also cause the roller 79 on the rear end of the arm 80 to pass from the large concentric portion 92 of its cam 78 to the port-ion 98 immediately following (Figs. 8 and 13), so that the blow-iron 1 will under the action of the spring 83 itself swing forward with reference to the structure 2. The bulb on the lower end of the blow-iron 1 will thus be carried clear vof the mold 3 (which will have been opened before the movements just described have taken place, as hereinafter set forth), and the neck of the bulb will be brought under the action of the mechanism 7 whereby the bulb is detached (Fig. 8). A slight further revolution of the shaftl 12 and the cams 7 5 and 78 will not change the position of the column 2, but will cause the roller 79 to pass to the portion 94 of the cam 78 (Fig. 9) and allow the blow-iron 1 to swing still further forward until its end comes under the action of the mechanism 8 by which any glass adhering to it is cleaned off. Still further revolution of the shaft 12 and the cams will cause the roller 76 to leave the smaller concentric portion 91 of cam 75 and to move quickly inward over the portion 95 to the portion 96, which will allow the structure 2 to swing as far forward as possible (Fig. 10). Early in this movement of the structure 2 the spring 33 will by the corresponding movement of the cam 78 be allowed to swing the blow-iron 1 to its extreme forward position with reference to the structure 2, so that at the proper time the lower end of the blow-iron may enter the mouth of the furnace 4l; (Figs. l and 10) and be dipped into the molten glass therein. Before the conclusion of this forward swing of the structure 2 the roller 7 9 will be lifted out of contact with the cam 78, as will be seen from Figs, t and 10: but this is of no consequence beca-use the spring 33 will bring the blow-iron 1 to al perfectly definite eXtreme forward position with reference to the column 2.

The continuing revolution of the cam 75 will allow the structure 2 to remain in its eXtreme forward position with the blow-iron l in the glass in the furnace 4 (Figs. l and 10) but avery short time, just long enough, in fact, for the blow-iron to gather a batch of glass,-for the action of the portion 97 of the cam 75 on the roller 76 will almost at once cause the structure 2 to swing rapidly back toward the position shown in Fig. 11. Early in the travel of the roller 76 over the cam portion 97 the roller 79 will have returned to the cam 78 and be in contact with the relatively fiat side thereof, and during the subsequent portion of such travel the backward swing of the structure 2 and the action of the forwardly moving portion 98 of the cam 78 will combine to make the blowiron 1 itself move back very rapidly toward its position in Fig. 11 so as to allow the glass but little time to cool. As the portion 99 of the cam 75 is reached by the roller 76 and the backward movement of the blow-iron 1 becomes less rapid (Fig. 11), the charge of glass on the end of the blow-iron will come under the action of the marvering device 9 (if one is employed) which will if necessary bring it to more nearly or exactly the proper form for blowing, as already mentioned.

As the roller 76 passes over the portion 99 of the cam 75 and, on further revolution of the shaft 12, on to the large concentric portion 90 where it started, the portion 100 of the cam 78 will, of course, swing the blowiron 1 still further back toward the structure 2 and the vertical position shown in Fig. 1. During the latter portion of this movement the roller 85 on the rocker 86 will leave the small concentric portion 101 of the small cam 811 where it has been riding during the movements of the. other parts above described and reach the portion 102 of said cam, which will cause the rocker 86 to act through the rod 53 and the other parts already described to lift the blowiron 1 with reference to its axis 5, and thus the lower end of the blow-iron with the charge of glass thereon will in its final backward swing clear the cleaning off device and the detaching device 7, as shown in Fig. 7. The further revolution of the shaft 12 and the cams v78 and 84 will cause the roller 79 to ride upon the large concentric portion 92 of the cam 78, where it started, and the roller 85 to traverse the portion 103 of the cam 84, and return to the concentric portion 101, and thus the blow-iron 1 will swing back to a vertical position (Fig. 1) and will descend quickly until the charge of glass on it enters the mold 3, which (as hereinafter described) will have been brought into proper position and will be held open to receive it. The ending of this rapid descent of the blow-iron when the charge of glass enters the mold 3 may by giving the cam 84 the form shown be made rather abrupt, which will elongate the charge somewhat and so complete its preparation for blowing. Thereafter for about half a revolution of the shaft 12 the various rollers will ride idly upon concentric portions of their respective cams and the structure 2 and the blow-iron 1 will remain in the position which they occupy in Fig. 1, and during this period of rest the closure of the mold 3 about the charge of glass, the blowing of the charge into a bulb, and the opening of the mold for the removal of this bulb therefrom will occur,all as hereinafter described.

Referring, now, to the operations for which power is derived from the forward shaft 6 and` first, to the rotation of the blowiron 1, it will be seen that at one end of the shaft 6 there is a sprocket wheel 105 (Figs. 1, 2, and 3) which acts through a chain 106 to drive aA sprocket wheel 107 on one end of a short shaft 108 having its bearing in a sleeve portion 109 of the bracket 42 on the column 2. On the other end of this shaft 108 is a bevel gear 110 which meshes with abevel gear 111 at the lower end of the upright shaft 40 which rotates the blow-iron through the train of gearing already described. It will readily be seen, therefore, that both the swinging of the structure 2 about its axis 6 and the swinging of the blow-iron 1 about the axis 5 may take place without any effect upon the rotation of the blow-iron except a slight acceleration, or retardation, which is of no practical conscquence, and equally without interference with the movements of various other parts.

Referring, now, to Figs. 1, 2, 3, 4, 13, and 14, it will be seen that the mold 3 shown comprises two sections hinged together, as it were, on a pivot 114, these sections having rearwardly extending lugs 115 through which the pivot 114 passes. The pivot 114 is mounted on a structure 116 which is itself pivoted at 117 between lugs 118 on a portion 119 of the framework of the machinethese lugs appearing in Fig. 2, in which the structure 116 and many of the parts associated with it are omitted. To the righthand one of these lugs 118 (Fig. 2) is also 116. At the lower end of the arm 120 is a roller 124 which is acted on by the periphery of a large cam 125 on the shaft 6. This cam maintains the mold 3, the structure 116, and the parts associated with them in the positions shown in Figs. 1 and 13 with a lug 126 at the rear of the structure 116 against a suitable abutment 127 on the vframe structure 119 (Figs. 2, 13, and 14) during the greater partof its period of revolution, including that in which the blowing operation occurs. After the blowing is completed, the cam 125 allows the mold 3 and various other parts to swing down into the positions where for the sake of illustration they are shown in Fig. 4 and remain awhile with the mold immersed in a vessel of cooling water (not shown), and then raises them into position for the blowing of another bulb. 1t is to be understood, however, that in the operation of the particular machine illustrated the column 2 is in its upright position shown in Fig. 1, while all this is taking place, not swinging forward into the position where it is shown in Fig. 4 until after the mold has been dipped in the cooling water and restoredto the position where it is shown in Figs. 1 and 13.

The opening and closing of the mold sections is effected by a cam 130 on the shaft 6 through a resiliently yielding connection which insures that when closed they shall come tightly together. As shown, (Figs. 13 and 14) there are two rods or links 131 which have hooked forward ends engaged in holes in lugs 132 on these sections and which pass through sleeves 133 pivoted at the extremities of a yoke-like part 134 and have locknuts 135 on their rear ends, and springs 136 are interposed between the sleeves 133 and lock-nuts 137 in front of the sleeves 133. The lock-nuts 135 and 137 allow the effective length of the rods 131 to be. altered and adjusted and the resistance of theconnection of which they form a part to be varied. The yoke 134 is secured on a rod 138 (as by a set-screw 139) which is adapted to slide through a sleeve 140 on the structure 116. A part 141 is secured on the rod 138 (as by a set-screw 142,) so as to be adjustable in position, and a spring 143 is mounted on the rod between the sleeve 140 and the part 141. This spring 143, it will be seen, is constantly urging the rod 138 and the yoke 134 back toward the positions shown in Figs. 13 and 14, so that the mold 3 always tends to open. The part 141, however, is connected by a link 144 pivoted thereto with one arm of a rocker 145 whose other arm carries a roller 146 and which is pivoted at 147 to a lug on the frame structure 119. The earn 130 acts through this rocker 146 and the various other parts to close the mold 3 when the charge of glass on the blow-iron 1 has been brought into it and allows the spring 143 to open the mold when the blowing has been completed,-the mold being open when the roller 146 is in contact with the smaller concentric portion of the cam 130. (Fig. 13) and being closed when it is in contact with the larger concentric portion of said cam. The parts 131, 134, 138, 144, 145, etc., swing forward with the structure 116 as already described (see Fig. 4) after the mold 3 has opened in consequence of the roller 146 passing from the large concentric portion of the cam 130 to its small concentric portion and return to their upright positions before it is time for a fresh charge of glass to come into the mold 3 and for the latter to be closed,-the roller 146 leaving the small concentric portion of the cam 130 and returning to it while the cam 130 continues to revolve with the large cam (Fig, 1) which raises and lowers the mold.

The air valve 56 and the passage of air through it and into the blow-iron 1 have already been described. This valve 56 is controlled and operated by a cam 150 on the shaft 6 which acts peripherally through a roller 151 on one arm of a rocker 152 pivoted at 153 on a bracket 154 secured to the column 2, the other arm of this rocker being pivoted to the rod or link 74 already described. The cam 150 is so designed and arranged with reference to the cams 125 and that while the mold 3 is maintained upright and closed by the cams 125 and 13() it acts upon the rocker 152 to pull the rod 74 downward and open the air valve 56 against the resistance of its spring 59 (Fig. 7) and allows it to be closed again by said spring. The cam has a separate act-ing face portion 155 consist-ing of a strip of metal thin enough to be more 0r less resilient or yielding. As shown (Figs. 13 and 14), there are a number of large headed studs or bolts 156 which extend through holes in the fixed rim portion of the cam and are screwed into the face portion 155 or otherwise fastened to it, and coiled springs 157 are interposed between the fixed rim portion of the cam and the heads of the bolts or pins 156 and serve to support the face portion 155 elastically. Adjusting screws 158 are threaded through holes in the fixed portion of the cam rim. and by means of these screws the form of the acting face of the cam can be varied to insure the supply of air to the blow-iron 1 in the manner most suitable for the blowing of the particular article that it is desired to produce, as described in my Patent No. 813,289 and my application Serial No. 507,056 above mentioned. The cam 150 can be adjusted angularly with reference to the cams 125 and 130 by loosening up the setscrews 159 by which it is held fast on a sleeve 160 to which they also are secured,

)Vhile the air may be introduced into the column 2 in any desired manner, it is advantageous to make the principal portion of the frame-work 10 hollow and utilize it as a reservoir for steadying the air pressure and to have the air pass therefrom into the column 2 where the latter has its bearing about the shaft 6. It is also preferable not to subject the shaft 6 to the strain of supporting the structure 2 and the parts carried by it, but to provide them with a. bearing on some part of the framework of the machine, As shown in Figs. 2, 4, 13, and 14, the shaft 6 extends through a conduit portion 161 of the structure 119 already referred to as forming part of the framework 10, and this hollow portion 161 communicates with the interior of the main portion of the frame-work 10 at 162, so that the air passes up therethrough to an annular chamber 163 therein about the shaft 6. This chamber 163 extends to the left (Figs. 2 and 14) into a projecting cylindrical journal portion 164 of the structure 119, 161 on which the structure 2 is directly mounted. As shown, there are a plurality of holes 165 in the upper side of the journal 164 through which the air passes from the chamber 163 directly into the interior of the column 2. The air may enter the hollow ina-in portion of the frame-work 1() through the hole 166 (Fig. 3), and may be supplied by any convenient means-such, )for example, as a blower or compressor (not shown), which may be mounted on the rearwardly extending portion 167 of the frame-work 10 and driven by a belt from the pulley 168 on the shaft of the motor 13.

The machine has so far been described as though the shafts 12 and 6 and the cams 7 5, 78, 84, 125, 130 and 150 revolved continuously. Since, however, the operations produced by the cams 125, 130, and 15() on the shaft 6 will in the machine shown only occur in the period of about half a revolution of the cams 75, 78, and 84 on the shaft 12 during which the concentricI portions 90, 92, and 101 of these cams are acting on the parts 2 and 1 which they control and keeping them stationary in the positions shown in Fig. 1, and since it is practically convenient to have the cams 125, 130, and 150 of a simple form such that they will perform the complete cycle of operations necessary for the blowing of a bulb once in a. revolution, it is more convenient for these cams 125, 13() and 156 to remain stationary during the half revolution of the cams 75, 78, and 84 in which the various movements of the column 2 and the blow-iron 1 occur. In the machine shown, this is brought about by allowing the shafts 12 and 6 to revolve continuously and making the shaft 6 revolve l twice for each revolution of the shaft 12.-- the bevel gear 19 (Figs. 1, 2. and 3) being twice as large as the bevel gear 20 and the bevel gears and 23 of the same size,-and bv connecting the sleeve 160 to which the cams 125, 130. and 150 are secured to the shaft 6 so as to revolve with it one revolution and disconnecting' it and allowing the cams to remain stationary during the next revolution.

As shown, this connection of the part 160 and the cams thereon to the shaft 6 is effected by a multiple disk clutch 170. (See Fig. 1, 2. 3, 14, 15, and 16.) The hub 171 of the cam 125 is secured by pins 172 to a part 173 which shaft 6 in a keyway (not shown) in the hub 176 of the casing part 174. rlhe other disk members 177 and 178 which he between the acting faces of the members 173 and 174 are in a general way like large flat washers, and

alternate ones (177) of them are connected with the part 173 and the rest (178) with the part 174. These parts and their relation to one another are best shown in Figs. 15 and 16, the former of which is a View of the part 173 as it appears from the right of the line 15-16 in Fig. 14, the parts 174, 177, 178, etc., being removed, and the latter of which is a view from the left of the line 15-16 of the parts 174, 177, 178 and others associated with them in their operating positions, certain parts being in section along the line 15-16. As shown in these figures, there are lugs 179 projecting from the inner face of the part 173 and lugs 180 on the interior of the cylindrical portion of the casing part 174. The disks 17 7 are of such a size that the casing can revolve freely about them without interference from the presence of the lugs 180; but the lugs 179 engage in notches 181 extending outward from the circular portions of their central openings. The disks 178 are larger, and have peripheral notches 182 in which the lugs 180 engage; and their central openings are so large that the disks can revolve freely about the lugs 179. The casing part 174 is constantly urged toward the part 173 by a spring 183 between the hub 176 of the part 173 and an abutment 184 which is made adjustable by being threaded into a cup-like part 185 fast on the shaft 6, so that the clutch 170 tends to set itself. The setting of the clutch 170 is, however, controlled by a part 186 which comprises a hub portion 187 that fits loosely on the shaft 6 between the end of the sleeve 160 and the inner side of the casing 174 and a shank portion that lies in a depression 188 in the inner face of the part 173 and projects beyond the circumference of the part 174 a distance equal to the width of a cam flange 189 that extends part way around the part 173. On the end of the hub 187 adjacent the end of the sleeve 160 is a projection 190 with inclined faces that is adapted to fit in a similarly shaped but wider depression 191 in the end of the sleeve 160 and allow the clutch to set or to ride outward on the inclined face 192 of the depression 191 and open the clutch. The depression 188 is wide enough to allow the part 186 a limited turning movement with reference to the part- 173 and the sleeve 160 just about sufficient to operate the clutch.

From Figs. 1, 14, and 16 it will be seen that adjacent the clutch 170 there is a bolt or stop 193 which slides in a sleeve 194 on a bracket 195 on the frame-work of the machine and is urged forward into the path of the j )rojecting outer end of the part 186 by a spring 196 in said sleeve. lVhen the parts are in the condition of restindicated in Figs. 14 and 16, this stop 193 is engaged beneath the outer end of the part 186 and the latter is thereby caused to occupy its full line position in Fig. 16 at the upper side of the depression 188, where it will hold the clutch 170 open and keep the` driven parts 173, etc.. stationary. lVhen, however, the bolt 193 is drawn back, its weight and the friction with the shaft 6 and the pressure of the spring 183 on the inclined faces of the parts 160 and 187 at 192 will cause the part 186 to swing down as indicated in dotted lines in Fig. 16 and allow the clutch 170 to set, and thus the part 173, the sleeve 160, and the cams 125, 130, and 150 will be started into revolution. Then this has happened, the bolt 193 will be held back for a time by the cam flange 189; but it will subsequently ride down and off the inclined end of this flange into the path of the part 186 as the latter comes around toward its initial position, and so finally engage it and cause the momentarily continuing revolution of the parts 160, 173, etc., to throw out the clutch. Thus one complete revolution of the shaft 6 and one operation of the mold 3 and the air-valve 56 for the blowing of a bulb will take place each time the bolt 193 is drawn back.

In the machine shown, the drawing back of the bolt 193 is produced by the column 2 itself just as it is reaching its position shown in Figs. 1 and 13 at the end of its backward swing after the gathering of a batch of glass and just as the charge of glass on the blowiron 1 is entering the mold 3. As shown in Figs. 1 and there is a latch or dog 200 pivoted at 201 on a part. 202 secured (as by a set-screw 208) at the rear end of the bolt 1 93. This latch 2050 is kept from swinging backward from the position shown in Fig 1 by a portion 204 of the part 202 which lies f behind it', but is free to swing forward. The ,latch 200 cooperates with a finger 205 secured to a shaft 206 near its right hand end (Fig. 2), this shaft 206 being mounted in brackets 207 and 208 on the frame-work and having a double crank offset portion 209 to allow the roller 124 to swing over it. At the left-hand end of the shaft 206 is secured Y an arm 210, and on the end of this arm 210 is pivoted a short puslrrod 211 (Figs. 2 and 4 1,3). This pushsrod member 211 is kept up in thesomewhat sloping position shown by a spring 212 on vone end of which it rests (the other end of said spring being secured to v the rear edge of the arm 210 by screws 213) so that its rear end is held against the lower side of the bottom of the column 2 in the path of a shoulder or lug 214 thereon. When the bolt 193 is beneath the part 186 as shown ,v in Fig. 16 and the parts driven or operated through the clutch 170 are at rest during the forward swing and return of the column 2,

the front edge of the finger 205 engages the rear edge of the latch 200. As the column 2 is just coming'back to its rearmost position after the gathering of a batch of glass on the blow-iron 1 and this batch of glass 1s about n to enter or entering the mold 3, the shoulder 214 vwill strike the end of the push-rod '211 and act through the parts 211 and 210 4and the shaft 2076 to swing the finger 205 forward from this position and draw forward the bolt 193 from under the part 186,

. and the part 186 will drop downward (Fig.

`16) and thecams 125, 130, and 150 will start to revolve, as already described. Just after the bolt 193 is fully withdrawn from beneath the part 186, the linger 205 will trip f past the end of the latch 200 and so leave the turn of the column 2 after a fresh gathering of glass has occurred,-thc latch 200 swingy ing to the right to permit this quite freely.

It has 4thus .far been in a manner assumed thatthe cams 75, 7 8, and 84 are fast on the shaft 12. Since the throwing in of thei clutch 170 which controls the operation of the mold 3 and the supply of air to the blowiron 1 is produced by the column 2 itself at the proper time, the machine would operate satisfactorily under these conditions provided that after the clutch 170 had been thrown in no slipping thereof occurred. There is, however, always a possibility that this clutch 170k may slip (it being, indeed, expected to slip and prevent injury to the machine in case any of the parts driven through it should be blocked in any way) and with the cams 75, 7 8,`and 84 fast on the shaft 12 such slipping would probably result in the blow-iron 1 being swung forward before the mold 3 was opened and a bulb being consequently spoiled. For this and various other reasons, therefore, it may be preferable to make the connection between the cams 75, 78, and 84 and the shaft 12 a yielding one, and to arrange that it shall be effected or become operative only when the mold 3 is open. Accordingly, these cams 75, 78, and 84 are in the machine shown mounted and secured together on the shaft 12 in a. manner very similar to that in which the cams 125, 130, and 150 are mounted on the shaft 6, as above described, and are in like manner connected to the driven member of a clutch 220 on said shaft-12 (Figs. 1, 3, and

13) which is constructed like the clutch 170` and is actuated as a result of the rearward movement of the mold operating rod 138 which accompanies the opening of the mold 3. As will be seen from Fig. 13, the bolt or stop 221 which co-acts with the operating member 222 of the clutch 220 has on its rear end a pin 223 whose protruding ends are engaged in slots in the sides of a fork at the lower arm of a rocker 224 pivoted at 225 on a bracket portion 226 of the frame-work of. the inachine,-this bracket also comprising the sleeve in which the bolt 221 slides. On the upper arm of the rocker 224 (Figs. 13 and 14) a part 227 having thereon a projection or shoulder 228 is secured by one or more set-screws 229 which allow it to be adjusted along said arm. On the rear end of the mold operating rod 138 a part 230 which has on it a vlatch 231 similar to the'latch 200 is secured by a set-screw This latch 231. is pivoted at its lower end on a pin 233, and a shoulder or lug 234 on the part 230 prevents this latch 231 from swinging forward beyond the position in which it appears in Fig. 13, while another projection 235 on the part 230 prevents it from swinging back more than a certain distance such that under the infiuence of gravity it will always tend to return to its forward position shown in Figs. 13 and 14. When the mold 3 is clos-ed, the shoulder 228 will be behind the latch 231 as shown in Fig. 14 or even Somewhat farther behind it than it appears in this gure,-the parts 224, 227, 230, etc., being arbitrarily shown in Fig. 14 in positions which do not correspond to those of the mold 3 and other parts there shown, in order that they may be more clearly visible, and the rod being shown with an intermediate portion broken away in order that the parts 224, 227

230, etc., may appear within the limits of the drawing.

IVhen, however, the mold operating rod 138 moves back and opens the mold 3, the corner of the latch 231 will 'engage the shoulder 228 and swing the upper arm of the rocker 224 back a suflicient distance to cause the bolt 221 to release the operating member 222 of the clutch 220 (this being the event shown in Fig. 13) and initiate a revolution of the cams 75, 78, and 84 with the shaft 12. Before the conclusion of its rearward movement, the latch 231 will trip past the shoulder (in a manner similar to the tripping of the linger 205 past the latch 200 of the operating mechanism of the clutch 170) so as to leave the rocker 224 free to swing back to its original position above described as soon as the mechanism of the clutch 220 permits the bolt 221 to move forward into the path of the member 222 again. IVhen, on the other hand, the operating rod 138 subsequently moves forward to close the mold 3 after the charge of glass on the blow-iron 1 has been introduced thereinto, the latch 231 will swing back and trip past the shoulder 228 so that it may be in a position to re-engage this shoulder and actuate the bolt 221 when the mold 3 is again opened.

In starting the machine, it may be necessary to set one or the other of the clutches 170 and 220 by hand, depending upon the position in which the machine was left when power was last shut off; but when the machine has once been started it will under normal conditions continue to run indefinitely without further attention, each of the clutches 170 and 220 being thrown in and out automatically at the proper time as above described. So long as there is no slipping of either clutch, the cams 75, 78, and 84 will revolve practically continuously with the shaft 12, since the rearward movement of the mold operating rod 140 will occur once in each two revolutions of the shaft 6 and therefore once in each revolution of the shaft 12. If, on the other hand, either clutch slips, the presence of the other will prevent premature movement of any of the parts of the machine and spoiling of the work on it; while if any of the parts driven through either clutch becomes blocked, its presence will save the machine itself from damage.

lVhile the manner in which the blow iron is mounted (already described in connection with Figs. 5, 6, and 7) is such that in somecases it may be practicable and desirable to dispense with it, a fork or other suitable guiding means 312 more or less similar to that shown in my Patent :fi 813,289 and in my application Serial No. 507,056 may be arranged as shown in dot and dash lines in Figs. 13 and 14 to guide the blow iron 1 as the charge of glass thereon enters the mold 3 and t0 maintain the blow-iron in proper position while the blowing operation is going on. Asshown, this fork is adjustably secured (as by a setscrew 313) on a rod or standard 314 which is mounted in a hole 315 in the structure 116, a short distance behind the pivot 114 and, as shown, is secured therein by a pair of nuts.

In the machine shown, the devices or mechanism 7, 8, and 9 by which the blown bulbs are detached from the blow-iron 1 and the blow-iron is cleaned off etc. are arranged in front of the portion of the machine that has been described in detail above and are mounted on frame structures 800 and 900 separate from the frame-work 10 (Figs. 1 and Such of these mechanisms as may require it receive power from a longitudinal counter shaft 250 which eX- tends from a bearing in a bracket 251 of the frame-work 10 to a bearing in a bracket 252 on the frame-work 900,-the shaft 250 being for convenience in moving the machine made in sections which are connected together by a coupling 253,-and is driven from the main transverse shaft 12 at the rear of the machine. As shown, there is at the rear end of the shaft 250 a bevel gear 254 which meshes with a bevel gear 255 at one end of a transverse shaft 256 having its bearinvs in brackets on the frame-work 10, and this shaft 256 has on it a sprocket wheel 257 which is driven through a chain 258 from a sprocket-wheel 259 near one end of the shaft 12 (Figs. 1, 2, 3, and 4), the relative diameters of the gears 254 and 255 and of the sprockets 257 and 259 being such that the shaft 250 revolves at a considerably greater speed than the shaft 12.

The device for detaching the bulbs shown in Figs. 1, 3, 17, 18, and 19 comprises a wheel 701 having in a groove in its a periphery a circumferential band 702 of porous material (asbestos, for example), preferably somewhat yielding, which is kept more or less moistened or saturated with water by revolving in contact with a sponge 703 in a vessel of water 704 arranged beneath the edge of the wheel. In the device shown, the wheel 701 is not positively driven, but is merely mounted loosely on a more or less nearly upright shaft or standard 705. As the blow-iron 1 swings forward, the revolving neck of the blown bulb thereon will come in contact with the periphery of the wheel 701 and cause it to revolve, and so will be wet all the way around by the band 702. The resultant chilling of the heated glass will cause a strain in it which will result in the cracking off of the bulb, which may be removed by an attendant or taken care of by any suitable means arranged in position to receive 

